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Cheap flights from White Plains to St. Louis from $148

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from White Plains to St. Louis departing on 8/21. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from White Plains to St. Louis

Cheap round-trip flights

Enter your travel dates to find the best prices.
Delta Logo
12:36 pm - 4:38 pm
HPN
-
STL
5h 02m
1 stop
Delta Logo
6:40 am - 11:56 am
STL
-
HPN
4h 16m
1 stop
$301Delta
Sat, Sep 5 - Sat, Oct 3
Delta Logo
4:29 pm - 11:31 pm
HPN
-
STL
8h 02m
1 stop
Delta Logo
10:29 am - 3:45 pm
STL
-
HPN
4h 16m
1 stop
$326Delta
Sun, Sep 6 - Sat, Oct 3
American Airlines Logo
6:00 am - 12:54 pm
HPN
-
STL
7h 54m
1 stop
American Airlines Logo
5:00 am - 11:29 am
STL
-
HPN
5h 29m
1 stop
$351American Airlines
Sun, Sep 6 - Thu, Oct 1
Delta Logo
12:54 pm - 5:53 pm
HPN
-
STL
5h 59m
1 stop
Delta Logo
3:58 pm - 10:25 pm
STL
-
HPN
5h 27m
1 stop
$366Delta
Thu, Jul 23 - Tue, Jul 28
Delta Logo
6:00 am - 9:43 am
HPN
-
STL
4h 43m
1 stop
Delta Logo
7:08 am - 2:29 pm
STL
-
HPN
6h 21m
1 stop
$391Delta
Thu, Jul 23 - Mon, Jul 27
Delta Logo
6:49 pm - 9:31 am
HPN
-
STL
15h 42m
2 stops
Delta Logo
6:30 am - 11:56 am
STL
-
HPN
4h 26m
1 stop
$397Delta
Fri, Jul 24 - Wed, Jul 29
Delta Logo
6:49 pm - 9:31 am
HPN
-
STL
15h 42m
2 stops
Delta Logo
7:08 am - 2:29 pm
STL
-
HPN
6h 21m
1 stop
$402Delta
Fri, Jul 24 - Tue, Jul 28
Delta Logo
5:12 pm - 8:37 pm
HPN
-
STL
4h 25m
1 stop
Delta Logo
1:22 pm - 10:25 pm
STL
-
HPN
8h 03m
1 stop
$407Delta
Wed, Jul 8 - Wed, Jul 15
American Airlines Logo
3:22 pm - 9:21 pm
HPN
-
STL
6h 59m
1 stop
American Airlines Logo
6:43 am - 2:30 pm
STL
-
HPN
6h 47m
1 stop
$421American Airlines
Wed, Jul 29 - Thu, Jul 30
Delta Logo
6:49 pm - 9:31 am
HPN
-
STL
15h 42m
2 stops
Delta Logo
7:08 am - 2:29 pm
STL
-
HPN
6h 21m
1 stop
$422Delta
Fri, Jul 24 - Mon, Jul 27

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American Airlines flights from White Plains to St. Louis

Our best American Airlines deals on White Plains to St. Louis flight tickets
American Airlines
Sep 6
HPN6:00 amWhite Plains Westchester County
7h 54m
1 stop
STL12:54 pmLambert-St Louis
Oct 1
STL5:00 amLambert-St Louis
5h 29m
1 stop
HPN11:29 amWhite Plains Westchester County
$351
American Airlines
Jul 29
HPN3:22 pmWhite Plains Westchester County
6h 59m
1 stop
STL9:21 pmLambert-St Louis
Jul 30
STL6:43 amLambert-St Louis
6h 47m
1 stop
HPN2:30 pmWhite Plains Westchester County
$421
American Airlines
Jul 24
HPN5:45 pmWhite Plains Westchester County
7h 31m
1 stop
STL12:16 amLambert-St Louis
Jul 26
STL6:00 amLambert-St Louis
7h 30m
1 stop
HPN2:30 pmWhite Plains Westchester County
$431

Delta flights from White Plains to St. Louis

Our best Delta deals on White Plains to St. Louis flight tickets
Delta
Sep 5
HPN12:36 pmWhite Plains Westchester County
5h 02m
1 stop
STL4:38 pmLambert-St Louis
Oct 3
STL6:40 amLambert-St Louis
4h 16m
1 stop
HPN11:56 amWhite Plains Westchester County
$301
Delta
Sep 6
HPN4:29 pmWhite Plains Westchester County
8h 02m
1 stop
STL11:31 pmLambert-St Louis
Oct 3
STL10:29 amLambert-St Louis
4h 16m
1 stop
HPN3:45 pmWhite Plains Westchester County
$326
Delta
Jul 23
HPN6:49 pmWhite Plains Westchester County
6h 04m
1 stop
STL11:53 pmLambert-St Louis
Jul 29
STL3:58 pmLambert-St Louis
5h 27m
1 stop
HPN10:25 pmWhite Plains Westchester County
$366

momondo Fare Finder

 
Customize your flight search to find flights from White Plains to St. Louis that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated June 28, 2026.
Use the filters below to find and compare flights from White Plains to St. Louis that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip
Quickest round-trip

White PlainsSt. Louis

HPN - STL

HPNSTL

White Plains Westchester County

Sat 9/5

12:36 pm-4:38 pm

1 stop5h 02m

Lambert-St Louis

Sat 10/3

6:40 am-11:56 am

1 stop4h 16m

$301

White PlainsSt. Louis

HPN - STL

HPNSTL

White Plains Westchester County

Sun 9/6

4:29 pm-11:31 pm

1 stop8h 02m

Lambert-St Louis

Sat 10/3

10:29 am-3:45 pm

1 stop4h 16m

$326

White PlainsSt. Louis

HPN - STL

HPNSTL

White Plains Westchester County

Sun 9/6

6:00 am-12:54 pm

1 stop7h 54m

Lambert-St Louis

Thu 10/1

5:00 am-11:29 am

1 stop5h 29m

$351

White PlainsSt. Louis

HPN - STL

HPNSTL

White Plains Westchester County

Thu 7/23

12:54 pm-5:53 pm

1 stop5h 59m

Lambert-St Louis

Tue 7/28

3:58 pm-10:25 pm

1 stop5h 27m

$366

White PlainsSt. Louis

HPN - STL

HPNSTL

White Plains Westchester County

Thu 7/23

6:00 am-9:43 am

1 stop4h 43m

Lambert-St Louis

Mon 7/27

7:08 am-2:29 pm

1 stop6h 21m

$391

White PlainsSt. Louis

HPN - STL

HPNSTL

White Plains Westchester County

Fri 7/24

6:49 pm-9:31 am

2 stops15h 42m

Lambert-St Louis

Wed 7/29

6:30 am-11:56 am

1 stop4h 26m

$397

White PlainsSt. Louis

HPN - STL

HPNSTL

White Plains Westchester County

Fri 7/24

6:49 pm-9:31 am

2 stops15h 42m

Lambert-St Louis

Tue 7/28

7:08 am-2:29 pm

1 stop6h 21m

$402

White PlainsSt. Louis

HPN - STL

HPNSTL

White Plains Westchester County

Wed 7/8

5:12 pm-8:37 pm

1 stop4h 25m

Lambert-St Louis

Wed 7/15

1:22 pm-10:25 pm

1 stop8h 03m

$407

White PlainsSt. Louis

HPN - STL

HPNSTL

White Plains Westchester County

Wed 7/29

3:22 pm-9:21 pm

1 stop6h 59m

Lambert-St Louis

Thu 7/30

6:43 am-2:30 pm

1 stop6h 47m

$421

White PlainsSt. Louis

HPN - STL

HPNSTL

White Plains Westchester County

Fri 7/24

6:49 pm-9:31 am

2 stops15h 42m

Lambert-St Louis

Mon 7/27

7:08 am-2:29 pm

1 stop6h 21m

$422

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to St. Louis from

How to get the cheapest flight ticket from White Plains to St. Louis

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the typical price of a round-trip flight between White Plains and St. Louis?

What is the cheapest month to fly to St. Louis?

In general, February is the cheapest month to fly from White Plains to St. Louis. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $0. The month of June is another great option to travel to St. Louis, with average flight prices from White Plains averaging around $325.

What is the cheapest day to depart on your flight to St. Louis?

The cheapest day to depart on your flight to St. Louis is on a Wednesday when prices can be found for as low as $370. This is often the case because there is less demand to fly during this day of the week. If your travel schedule is flexible, try to avoid departing on a Sunday because tickets tend to average around $484. These prices are subject to change though, so be sure to set up a Price Alert for flights to St. Louis.

What is the cheapest time of day to depart on your flight to St. Louis?

Flying to St. Louis from White Plains in the evening is the least expensive time of day to depart. momondo users have found prices as low as $382 when looking at flights departing in the evening. At noon is when there is more demand to fly to St. Louis, so prices are often more expensive at around $414 per ticket.

How have White Plains to St. Louis flight prices changed over time?

When to book flights from White Plains to St. Louis

Are you open to changing your travel dates? Check out the ideal times to fly from White Plains to St. Louis according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap White Plains to St. Louis (HPN to STL) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from White Plains to St. Louis

Fastest flight time

4h 25m

Direct flights

None
The fastest flight from White Plains to St. Louis takes 4h 25m
There are no direct flights from White Plains to St. Louis. There are no popular flight routes from White Plains to St. Louis.
Search flight deals

Frequently asked questions about flying from White Plains to St. Louis

  • How far is White Plains Westchester County to Lambert-St Louis by plane?

    Lambert-St Louis is 885.7 mi away from White Plains Westchester County. A reasonable flight in good conditions will take 4h 25m.

  • When did momondo last update prices for flights from White Plains Westchester County Airport to Lambert-St Louis Airport?

    Prices for flights from White Plains Westchester County Airport to Lambert-St Louis Airport were last updated today.

  • How many operators does momondo search for flights from White Plains Westchester County Airport to Lambert-St Louis Airport?

  • How old do you have to be to fly from White Plains Westchester County Airport to Lambert-St Louis Airport?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from White Plains Westchester County Airport to Lambert-St Louis Airport.

  • What documentation or ID do you need to fly to Lambert-St Louis Airport?

    The travel and health documents you'll need for your trip to Lambert-St Louis Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Lambert-St Louis Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

  • What is the most popular airline from White Plains to St. Louis?

Best airlines flying from White Plains to St. Louis

Compare and see reviews for airlines that fly from White Plains to St. Louis with momondo
Airline
Rating
Free Cancellation
Price
DeltaPriceFrom $287Free CancellationRating
7.8
8,455 reviews
Search Delta flights
American AirlinesPriceFrom $325Free CancellationRating
7.1
11,776 reviews
Search American Airlines flights

Traveling to a place near St. Louis?

Book flights to St. Louis if you plan to visit one of these locations
St. Charles
Chesterfield
Fairview Heights
Hermann
Maryland Heights
Florissant
O'Fallon
Collinsville
St. Peters
Alton
Wentzville
Farmington
Fenton
Clayton
Festus
Eureka
Litchfield
Edwardsville
Grafton
Shrewsbury

Why use momondo?

Why should I use momondo to find a flight deal from White Plains to St. Louis?

Finding the right flight to St. Louis from White Plains is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to St. Louis quick and easy, saving you time and money.

Can I find flights from White Plains to St. Louis with flexible booking policies on momondo?

Yes. momondo allows you to filter the results for White Plains to St. Louis flights to just show those with flexible booking policies.

How can momondo help me find flights from White Plains to St. Louis?

Once you have performed a search for White Plains to St. Louis flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

I’m not ready to book a flight from White Plains to St. Louis right now. Can momondo alert me if prices change?

If you are simply researching potential flights to St. Louis, momondo offers a useful price alert feature which will track prices for flights to St. Louis from White Plains and alert you when they change.

An easier way to manage your St. Louis trip

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